ES-5671 Rev.13

R1MS-GH3

Remote I/O R1M Series

THERMOCOUPLE & DC INPUT MODULE

(8 points, isolated)
Functions & Features
• 8-point thermocouple or DC inputs
• Complete channel-to-channel isolation
• Trigger input and alarm contact output
• Filtering protection against 50/60 Hz noise
• Modbus RS-485 and RS-232-C interface
• Easy system expansion via Modbus RTU

MODEL: R1MS-GH3T-[1][2]

ORDERING INFORMATION

• Code number: R1MS-GH3T-[1][2]
Specify a code from below for each of [1] and [2].
  (e.g. R1MS-GH3T-M2/Q)
• Specify the specification for option code /Q
  (e.g. /C01)

FIELD TERMINAL TYPE

T: M3 screw terminals

[1] POWER INPUT

AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
 47 – 66 Hz)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[2] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating

RELATED PRODUCTS

• Resistor module (model: REM3-250)
• R1X configurator software (model: R1CON)
Downloadable at our web site.
A dedicated cable is required to connect the module to the PC.  Please refer to the internet software download site or the users manual for the PC configurator for applicable cable types.

GENERAL SPECIFICATIONS

Connection
  Power input, transmission: Euro type connector terminal
  (Applicable wire size: 0.2 – 2.5 mm2 (AWG24 – 12), stripped
  length 7 mm)
  RS-232-C: 9-pin D-sub connector (male)
  (Lock screw No. 4-40 UNC)
  I/O: M3 screw terminals (torque: 0.6N·m) 
  PC Configurator: Miniature jack, RS-232-C level
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (gray)
Isolation: Input 1 to input 2 to input 3 to input 4 to input 5 to input 6 to input 7 to input 8 to trigger input to alarm output to RS-232-C or RS-485 or configurator jack to power to FG
Burnout: Upscale, downscale or no burnout selectable with the operating mode setting rotary switch (default: No). Set to ‘No Burnout’ when other devices are connected in parallel to the R1MS.
Operating mode setting: Rotary switch; burnout type and line noise frequency setting
Line noise filtering: Specifying line frequency to 50 Hz or 60 Hz in order to increase normal mode noise rejection ratio. (default: 50/60 Hz for use with both frequencies)
Node address setting: Rotary switch; 1 – F (15 nodes)
RUN indicator LED: Green light blinks in normal conditions.

COMMUNICATION

Baud rate: 38.4 kbps
Communication: Half-duplex, asynchronous, no procedure
Protocol: Modbus RTU
Refer to Modbus Protocol Reference Guide (EM-5650) for supported functions.
■ RS-232-C
Standard: Conforms to RS-232-C, EIA
Transmission distance: 10 meters max.
■ RS-485
Standard: Conforms to TIA/EIA-485-A
Transmission distance: 500 meters max.
Transmission media: Shielded twisted-pair cable (CPEV-S 0.9 dia.)

INPUT SPECIFICATIONS

Input: Thermocouple or DC input within ±10 V, 8 points
• Input resistance
Thermocouple: ≥ 1 MΩ when powered;
≥ 200 kΩ when not powered
DC: ≥ 800 kΩ when powered;
≥ 700 kΩ when not powered
Thermocouple types: PR, K, E, J, T, B, R, S, C, N, U, L, P
Sampling rate: 50 millisec./8 points
• Trigger input: Dry contact; ON detected at ≤ 1.5 V
Sensing: Approx. 3 V DC @ 0.8 mA
• Burnout detecting: ≤ 45 nA for upscale or downscale;
≤ 5 nA with no burnout (when measuring 0°C)
Burnout response: ≤ 10 seconds

OUTPUT SPECIFICATIONS

■ Alarm Output: Photo MOSFET relay (no polarity);
≤ 50 Ω at ON, ≥ 1 MΩ at OFF; OFF when not powered
Peak load voltage: 50 V max.
Continuous load current: 50 mA max.
Peak load current: 300 mA max. (≤ 0.1 sec.)

INSTALLATION

Power consumption
•AC: Approx. 9 VA
•DC: Approx. 3.5 W
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 450 g (0.99 lb)

PERFORMANCE (% of measuring range)

Accuracy
  DC input: ±0.05 % (±10 mV)
  Thermocouple input: See the table below.
Cold junction compensation error: (°C)
≤ ±(1.0 + [Ambient Temp. – 20] × 0.04) in stable ambient temperature (e.g. ±1.4°C at 10°C and 30°C)
Sudden ambient temperature change affects the cold junction compensation. Be sure to place the R1MS in stable ambient.
Temp. coefficient: ≤ (Accuracy / 4) / °C
(e.g. DC: ±0.0125 %/°C or ±2.5 mV/°C,
  TC: ±12.5 μV/°C, ±0.2°C/°C with type E)
Response time: Approx. 0.55 sec. (0 – 90 %)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(input 1 to input 2 to input 3 to input 4 to input 5 to input 6 to input 7 to input 8 to trigger input to alarm output to RS-232-C or RS-485 or configurator jack)
2000 V AC @ 1 minute (input or alarm output or RS-232-C or RS-485 or configurator jack to power to FG)
Normal mode noise rejection: ≥ 85 dB (50/60 Hz) with the filtering set to a specific frequency; ≥ 35 dB with 50/60 Hz setting
Common mode noise rejection: ≥ 120 dB (50/60 Hz)

EXTERNAL VIEW

COMMUNICATION CABLE CONNECTIONS

CONNECTION DIAGRAM

MODBUS COMMUNICATION

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SYSTEM CONFIGURATION EXAMPLES